function option3(name) {
    var count = 30;
    var key = name != 'pm25' ? name : 'pm2_5';
    var nameWorst = [];
    var dataWorst = data[name].slice(-count);
    for (var i = 0, l = dataWorst.length; i < l; i++) {
        nameWorst.push(dataWorst[i].name);
    }

    var nameBest = [];
    var dataBest = data[name].slice(0, count);
    dataBest.reverse();
    for (var i = 0, l = dataBest.length; i < l; i++) {
        dataBest[i] = {
            name: dataBest[i].name,
            value: -dataBest[i].value
        };
        nameBest.push(dataBest[i].name);
    }
    var option = {
        title: {
            text: '空气质量排行榜（' + name + ' 前后30名）',
            subtext: 'data from PM25.in',
            sublink: 'http://www.pm25.in',
            itemGap: 5,
            x: 'center'
        },
        tooltip: {
            trigger: 'item'
        },
        toolbox: {
            show: true,
            //orient : 'vertical',
            //x: 'right',
            //y: 'center',
            feature: {
                mark: {show: true},
                dataView: {show: true, readOnly: false},
                //magicType: {show: true, type: ['line', 'bar']},
                restore: {show: true},
                saveAsImage: {show: true}
            }
        },
        dataRange: {
            orient: 'horizontal',
            precision: name != 'co' ? 0 : 2,
            min: data[name + 'Min'],
            max: data[name + 'Max'],
            text: ['高', '低'],           // 文本，默认为数值文本
            calculable: true,
            x: '45%',
            y: 640,
            itemWidth: 35,
            color: ['maroon', 'purple', 'red', 'orange', 'yellow', 'lightgreen'],
            textStyle: {
                color: '#fff'
            }
        },
        grid: {
            x: 0,
            y: 50,
            x2: 0,
            y2: 0,
            borderWidth: 0
        },
        xAxis: [
            {
                type: 'value',
                position: 'top',
                splitLine: {show: false},
                axisLine: {show: false},
                axisLabel: {show: false},
                min: 0,
                max: data[name + 'Max']
            },
            {
                type: 'value',
                position: 'bottom',
                splitLine: {show: false},
                axisLine: {show: false},
                min: -data[name + 'Max'],
                max: 0,
                axisLabel: {
                    show: false,
                    formatter: function (v) {
                        return -v;
                    }
                }
            }
        ],
        yAxis: [
            {
                type: 'category',
                splitLine: {show: false},
                axisLine: {show: false},
                axisLabel: {show: false},
                data: nameWorst
            },
            {
                type: 'category',
                splitLine: {show: false},
                axisLine: {show: false},
                axisLabel: {show: false},
                data: nameBest
            }
        ],
        animation: false,
        series: [
            {
                name: '空气质量（' + name + '）',
                type: 'map',
                mapType: 'china',
                itemStyle: {normal: {label: {show: false}}},
                //roam: true,
                mapLocation: {
                    x: '45%',
                    y: 200,
                    width: '45%'
                },
                data: [
                    {name: '西藏', value: data.cityToData['拉萨'][key]},
                    {name: '青海', value: data.cityToData['西宁'][key]},
                    {name: '宁夏', value: data.cityToData['银川'][key]},
                    {name: '海南', value: data.cityToData['海口'][key]},
                    {name: '甘肃', value: data.cityToData['兰州'][key]},
                    {name: '贵州', value: data.cityToData['贵阳'][key]},
                    {name: '新疆', value: data.cityToData['乌鲁木齐'][key]},
                    {name: '云南', value: data.cityToData['昆明'][key]},
                    {name: '重庆', value: data.cityToData['重庆'][key]},
                    {name: '吉林', value: data.cityToData['长春'][key]},
                    {name: '山西', value: data.cityToData['太原'][key]},
                    {name: '天津', value: data.cityToData['天津'][key]},
                    {name: '江西', value: data.cityToData['南昌'][key]},
                    {name: '广西', value: data.cityToData['南宁'][key]},
                    {name: '陕西', value: data.cityToData['西安'][key]},
                    {name: '黑龙江', value: data.cityToData['哈尔滨'][key]},
                    {name: '内蒙古', value: data.cityToData['呼和浩特'][key]},
                    {name: '安徽', value: data.cityToData['合肥'][key]},
                    {name: '北京', value: (data.cityToData['北京'] || {})[key]},
                    {name: '福建', value: data.cityToData['福州'][key]},
                    {name: '上海', value: data.cityToData['上海'][key]},
                    {name: '湖北', value: data.cityToData['武汉'][key]},
                    {name: '湖南', value: data.cityToData['长沙'][key]},
                    {name: '四川', value: data.cityToData['成都'][key]},
                    {name: '辽宁', value: data.cityToData['沈阳'][key]},
                    {name: '河北', value: data.cityToData['石家庄'][key]},
                    {name: '河南', value: data.cityToData['郑州'][key]},
                    {name: '浙江', value: data.cityToData['杭州'][key]},
                    {name: '山东', value: data.cityToData['济南'][key]},
                    {name: '江苏', value: data.cityToData['南京'][key]},
                    {name: '广东', value: data.cityToData['广州'][key]}
                ]
            },
            {
                name: '空气质量最差（' + name + '）',
                type: 'bar',
                itemStyle: {
                    normal: {
                        color: (function () {
                            var zrColor = require('zrender/tool/color');
                            return zrColor.getLinearGradient(
                                0, 80, 0, 700,
                                //['orangered','yellow','lightskyblue']
                                [[0, 'purple'], [0.5, 'orangered'], [1, 'orange']]
                            )
                        })(),
                        label: {
                            show: true,
                            position: 'right',
                            formatter: '{b} : {c}'
                        }
                    }
                },
                data: dataWorst
            },
            {
                name: '空气质量最好（' + name + '）',
                type: 'bar',
                tooltip: {
                    trigger: 'item',
                    formatter: function (v) {
                        return v[0] + '<br/>' + v[1] + ' : ' + (-v[2]);
                    }
                },
                xAxisIndex: 1,
                yAxisIndex: 1,
                barMinHeight: 5,
                itemStyle: {
                    normal: {
                        color: (function () {
                            var zrColor = require('zrender/tool/color');
                            return zrColor.getLinearGradient(
                                0, 80, 0, 700,
                                //['orangered','yellow','lightskyblue']
                                [[0, 'lightskyblue'], [1, 'lightgreen']]
                            )
                        })(),
                        label: {
                            show: true,
                            position: 'left',
                            formatter: function (params) {
                                return params.name + ' : ' + (-params.value);
                            }
                        }
                    }
                },
                data: dataBest
            }
        ]
    };
    //console.log(option);
    return option;
}
